Visnagar is a city and a municipality in Mehsana district in the Indian state of Gujarat. Visnagar is also a taluka capital.

"Visnagar" named after its founder king Visaladev from Ajmer Dynasty was founded in 953 on the auspicious day of 'Akhatrij'.^{[citation needed]}

Founded just as an outpost of the kingdom of king Visaldeo surrounding the present 'Deliya Talao' a huge water tank covering an area of approx 2 lac sq. meter. As it was falling on a very strategic geographical location, Visnagar faced many war fights between Visaldeo, Babis, Ider dynasty and Gayakwads with change of rulers Visnagar so many changes and it grew with a fort wall with 6 gates none of them is present at this time but at some places, remains can be seen.

Visnagar Kasba Under Gayakwad rule, Visnagar become the first town in North Gujarat to have an underground water supply and sewerage system, Railway was also brought glory with it for the development of Visnagar with electricity.

Visnagar produced many freedom fighters during the time of the British Rule. Noted teachers, painters, drama artists, writers were also among those who highlighted Visnagar.

Visnagar City Industrial establishments like submersible pumps, thrashers, diamonds, and copper vessels drew attention nationwide. Industrial development, real estate development, education facilities, and medical facilities attract people from surrounding villages to come and stay here.

The city has a library named Parekh Vallabh Hemchand General Library, which is one of the oldest libraries of Gujarat. The library was established on 3rd March of 1878.

Visnagar is located at 23°42′N 72°33′E / 23.7°N 72.55°E / 23.7; 72.55 at average elevation of 117 metres.